This morning, I spoke with a tech. guy at Monroe Shock. Told him of my question and inquiry. He stated that the shock has been redesigned and no longer comes with separate rubber bushings or washer. Instead, part way down the shaft, there is a steel sleeve attached that encapsulates a rubber bushing. You install the shock as presented with a nut and washer on top. Well, there certainly is a steel sleeve containing the rubber bushingr, problem is, its recessed in this sleeve/cup about 1/32-1/64 of an inch. Not sure how this would help or come in contact with anything. The top of this sleeve/cup would still be metal against metal. I still think something is lacking, but will install as directed.
I looked at those parts from Summit. I would never have enough room on the shaft to install them. When the shock is installed through the top hole, there is about 1" or so of threaded rod left for the nut and washer. If I was to use one of those rubber bushings below the hole, on the underside, I don't think I would have enough threads.